Karl Brenner, M.D.
Internal Medicine Physician · Ann Arbor, MI
Karl Brenner, M.D. is an internal medicine physician with a practice address in Ann Arbor, Michigan, and NPI 1033186770, issued on Mar 1, 2006. Check the license (Michigan 4301067854, as entered in NPPES) on the Michigan Board of Medicine (LARA); the Medicare figures below come from public CMS files.
- Name
- Karl Brenner
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 4301067854 MI
Self-reported in NPPES; status is on the state search - Practice location
- 2090 Commonwealth Blvd, Ann Arbor, MI 48105
- Phone
- (734) 995-0303
- Enumerated
- Mar 1, 2006
- Record last updated
- Jul 13, 2026
- Fax
- (734) 995-0425
- Medicare enrollment
- Enrolled (PECOS I20081018000120); accepts Medicare assignment
- Medical or professional school
- University Of Michigan Medical School, 1996
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 5,735 in Michigan → Look up another NPI →
Also registered at 2090 Commonwealth Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Tina Chakko, M.DFamily Medicine Physician1831358845
- Mary Durfee, MDInternal Medicine Physician1336150655
- Julia Gargan Kozma, CNPAdult Health Nurse Practitioner1598865164
- Hina Papo, M.D.Internal Medicine Physician1184636904
- Sharon Smith, M.D.Internal Medicine Physician1083682116
- David Winston, M.D.Internal Medicine Physician1699886127
Verify Karl Brenner in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMichigan Board of Medicine (LARA)
Search for license 4301067854Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
3.1 times the Medicare Part D claims of the average internal medicine physician in 2024
9,979 Medicare Part D claims for 779 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims. 144 claims were for opioids.
Most prescribed
- Atorvastatin Calcium686 claims
- Levothyroxine Sodium420 claims
- Lisinopril414 claims
- Amlodipine Besylate391 claims
- Tamsulosin Hcl313 claims
- Metoprolol Succinate297 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through one group practice
- Iha Health Services CorporationLivonia, MI
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Karl Brenner among 5,735 internal medicine physician records in Michigan
Karl Brenner, M.D. is one of 5,735 internal medicine physician records with a practice address in Michigan. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 10% of them.
- NPI issued2006 · 10% of these records are older, 60% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated1996 · median 2006 among the 3,564 with a school on file
- Record last updated2026 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Michigan practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
479 internal medicine physician records list a practice address in Ann Arbor
They are 479 of the 15,616 NPPES records with a practice address in Ann Arbor, and 5,735 internal medicine physician records in Michigan.
All 5,735 in Michigan → Every provider in Ann Arbor → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Catherine Foster, MDAnn Arbor, MI 481051710966486
- Blanka Girard, MDAnn Arbor, MI 481051295730745
- Martha Gray, MDAnn Arbor, MI 481051801892294
- Sara Hashemian, MDAnn Arbor, MI 481051427054006
- Jyotsna Kapoor, M.D.Ann Arbor, MI 481051750359527
- Peter Paul, MDAnn Arbor, MI 481051407853617
- Edward Post, MDAnn Arbor, MI 481051851366306
- Pamela Shore, MDAnn Arbor, MI 481051144283243
Common questions
What is Karl Brenner, M.D.'s NPI number?
Karl Brenner, M.D.'s National Provider Identifier (NPI) is 1033186770, issued on Mar 1, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Karl Brenner, M.D. located?
The NPPES record lists a practice address at 2090 Commonwealth Blvd, Ann Arbor, MI, 48105. Phone: (734) 995-0303. Providers update this record themselves, so call before visiting.
How can I verify Karl Brenner, M.D.'s license?
NPPES lists Michigan license number 4301067854, as entered by the provider. Search the Michigan Board of Medicine (LARA) at https://aca-prod.accela.com/MILARA/GeneralProperty/PropertyLookUp.aspx?isLicensee=Y&TabName=APO. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Karl Brenner, M.D. prescribe under Medicare Part D?
In 2024, Karl Brenner, M.D. had 9,979 Medicare Part D claims for 779 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.